Phobos-Grunt Active Attitude Control

From: Paul Salanitri (
Date: Sun Nov 13 2011 - 02:25:14 UTC

  • Next message: Ted Molczan: "RE: Phobos-Grunt: latest two TLEs suggest manoeuvring or venting"

    According to (which
    I'm still interpreting) there may be attitude control thrusters used during
    the early stages.
    "Low-thrust attitude-control thrusters onboard MDU had a combined thrust of
    20-25 kilograms."
    If it does use thrusters - then this *may* explain the changes in orbit.
    It would also mean that some part of the spacecraft is still operational.
    [I'm speculating and asking for feedback on its thruster knowledge].
    Rough calculations based on a delta V of 1 m/s (from Ted's calculations)
    would be about 60 seconds of attitude thrusting within a day.  Not
    Paul S.
    -------------- next part --------------
    An HTML attachment was scrubbed...
    Seesat-l mailing list

    This archive was generated by hypermail 2b29 : Sun Nov 13 2011 - 02:25:55 UTC